To protect U.S. soldiers serving overseas, each soldier receives vaccinations ag
ID: 49545 • Letter: T
Question
To protect U.S. soldiers serving overseas, each soldier receives vaccinations against several diseases, including smallpox, before deployment. Following intelligence about an imminent smallpox threat, the Army wants to ensure that soldiers stationed in Iraq are fully protected from exposure to the disease, so all the soldiers in the threat zone are given a second vaccination against smallpox. The second vaccination is beneficial because
it contains plasma cells that survive longer than 4-5 days.
it stimulates production of a higher concentration of antibodies in the bloodstream.
it requires two injections to stimulate antibody formation.
it keeps previously produced plasma cells circulating in the bloodstream.
it renews the primary immune response.
it contains plasma cells that survive longer than 4-5 days.
it stimulates production of a higher concentration of antibodies in the bloodstream.
it requires two injections to stimulate antibody formation.
it keeps previously produced plasma cells circulating in the bloodstream.
it renews the primary immune response.
Explanation / Answer
It stimulates production of a higher concentration of antibodies in the bloodstream.
Vaccination is an immunization procedure in which a person develops immunity particularly against a specific pathogen. Vaccines contain live attenuated or killed organisms that are injected to the person in a series. So, our body develops antibodies to those antigens and if that organism enters into our body, they readily attach the pathogen. Vaccination is type of acquired immunity.
Generally vaccination is done on series, this is because to make the body completely resistant against a particular pathogen. After the first dose administration of the antigen, primary response of the body generates antibodies, this takes more time and the amount of antibodies generated decreases with time if the person no longer exposed to the second dose.
Second dose administration triggers a secondary response, which include a rapid and intense generation of anti bodies. This is due to the number of increase in sensitised memory B cells.
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